An Alphabetic/Alphanumeric Challenge is a type of Challenge Cache.
This type of challenge involves building a list of found caches based on the first letter of either the cache name or owner name. Some examples of an Alphabetic or Alphanumeric Challenges would be
- Find caches with names that begin with the letters A–Z.
- Find caches with owner names that begin with the letters A–Z.
- Find caches with names that begin with the letters A–Z and the digits 0–9.
- Find caches with owner names that begin with the letters A–Z and the digits 0–9.
Specific rules vary depending who sets up the challenge. Typical rules include:
- The Letter/Number that is required is the first Letter/Number of the name.
- Prior finds are usually allowed.
- Finds are not required to be from a particular location.
Variations exist that add additional requirements, such as all finds being a specific type of cache or each cache must be from a different state.
The following two examples are of the most common forms of this type of challenge: